<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
</head>
<body>

</body>
<script>
	class Box{
		render(){
			console.log("render");
			const my = ()=>{
				console.log(this);
			}
			// my();
			setTimeout(my);
			
		}
	}
	const obj = new Box();
	obj.render();
</script>
</html>